Paliperidoneinteractions

Strong CYP3A4/P-glycoprotein (P-gp) inducers: Avoid using strong CYP3A4 and/or P-gp inducers during a dosing interval for INVEGA HAFYERA. If administering a strong inducer is necessary, consider managing the patient using paliperidone extended-release tablets.

7.1 Drugs Having

Clinically Important Interactions with INVEGA HAFYERA Because paliperidone palmitate is hydrolyzed to paliperidone, results from studies with oral paliperidone should be taken into consideration when assessing drug-drug interaction potential. In addition, consider the 6-month dosing interval and the half-life of INVEGA HAFYERA. Table 10 presents clinically significant drug interactions with INVEGA HAFYERA. Table 10. Clinically Important Drug Interactions with INVEGA HAFYERA Centrally acting Drugs and Alcohol Clinical Rationale Given the primary CNS effects of paliperidone, concomitant use of centrally acting drugs and alcohol may modulate the CNS effects of INVEGA HAFYERA. Clinical Recommendation INVEGA HAFYERA should be used with caution with other centrally acting drugs and alcohol. Drugs with Potential for Inducing Orthostatic Hypotension Clinical Rationale Because INVEGA HAFYERA has the potential for inducing orthostatic hypotension, an additive effect may occur when INVEGA HAFYERA is administered with other therapeutic agents that have this potential. Clinical Recommendation Monitor orthostatic vital signs in patients who are vulnerable to hypotension. Strong Inducers of CYP3A4 and P-gp Clinical Rationale The concomitant use of INVEGA HAFYERA and strong inducers of CYP3A4 and P-gp may decrease the exposure of paliperidone. Clinical Recommendation Avoid using CYP3A4 and/or P-gp inducers with INVEGA HAFYERA during the 6-month dosing interval, if possible. If administering a strong inducer is necessary, consider managing the patient using paliperidone extended-release tablets. Examples carbamazepine, rifampin, or St. John's Wort Levodopa and Other Dopamine Agonists Clinical Rationale Paliperidone may antagonize the effect of levodopa and other dopamine agonists. Clinical Recommendation Monitor and manage patient as clinically appropriate.

7.2 Drugs Having

No Clinically Important Interactions with INVEGA HAFYERA Based on pharmacokinetic studies with oral paliperidone, no dosage adjustment of INVEGA HAFYERA is required when administered concomitantly with valproate. Additionally, no dosage adjustment is necessary for valproate when co-administered with INVEGA HAFYERA. Pharmacokinetic interaction between lithium and INVEGA HAFYERA is unlikely. Paliperidone is not expected to cause clinically important pharmacokinetic interactions with drugs that are metabolized by cytochrome P450 isozymes. In vitro studies indicate that CYP2D6 and CYP3A4 may be involved in paliperidone metabolism; however, there is no evidence in vivo that inhibitors of these enzymes significantly affect the metabolism of paliperidone. Paliperidone is not a substrate of CYP1A2, CYP2A6, CYP2C9, and CYP2C19; an interaction with inhibitors or inducers of these isozymes is unlikely.